What you may not have heard is that the NorLevo label was also updated to reflect the current scientific consensus on its method of action. The label now reads:

NorLevo works by stopping your ovaries from releasing an egg. It cannot stop a fertilized egg from attaching to the womb.

NorLevo is identical to Plan B One-Step, which is sold in the United States. The FDA should allow the manufacturers of Plan B, NextChoice, and other levonorgestrel emergency contraceptive pills to bring their labels up to date as well.